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Replace valid memory checks with new myfault class "exception handling", almost

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everywhere.  Leave some thread.cc stuff alone for now.
* cygtls.h: Kludge some definitions to avoid including a problematic windows
header.
(_cygtls::_myfault): New entry.
(_cygtls::_myfault_errno): Ditto.
(_cygtls::fault_guarded): New function.
(_cygtls::setup_fault): Ditto.
(_cygtls::return_from_fault): Ditto.
(_cygtls::clear_fault): Ditto.
(myfault): New class.
* exceptions.cc (handle_exceptions): Handle case of guarded fault in system
routine.
* gendef: Add another entry point for setjmp that the compiler doesn't know
about and won't complain about.
* gentls_offsets: Just include windows.h rather than kludging a HANDLE def.
* miscfuncs.cc (check_null_str): Delete.
(check_null_empty_str): Ditto.
(check_null_empty_str_errno): Ditto.
(check_null_str_errno): Ditto.
(__check_null_invalid_struct): Ditto.
(__check_null_invalid_struct_errno): Ditto.
(__check_invalid_read_ptr): Ditto.
(__check_invalid_read_ptr_errno): Ditto.
(dummytest): New function.
(check_iovec_for_read): Delete.
(chec_iovec): Rename from check_iovec_for_write.  Take a read/write parameter.
* tlsoffsets.h: Regenerate.
* winsup.h: Remove check_* declarations.
(check_iovec_for_read): Delete declaration.  Turn into a define instead.
(check_iovec_for_write): Ditto.
(check_iovec): New declaration.
* thread.h: Use ifdef guard name consistent with other header files.
This commit is contained in:
Christopher Faylor
2005-07-03 02:40:30 +00:00
parent 766bda7133
commit 893ac8e03c
32 changed files with 514 additions and 446 deletions
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40
winsup/cygwin/environ.cc
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@@ -331,20 +331,18 @@ _addenv (const char *name, const char *value, int overwrite)
extern "C" int
putenv (char *str)
{
int res;
if ((res = check_null_empty_str (str)))
myfault efault;
if (efault.faulted (EFAULT))
return -1;
if (*str)
{
if (res == ENOENT)
return 0;
set_errno (res);
return -1;
}
char *eq = strchr (str, '=');
if (eq)
return _addenv (str, eq + 1, -1);
char *eq = strchr (str, '=');
if (eq)
return _addenv (str, eq + 1, -1);
/* Remove str from the environment. */
unsetenv (str);
/* Remove str from the environment. */
unsetenv (str);
}
return 0;
}
@@ -353,19 +351,11 @@ putenv (char *str)
extern "C" int
setenv (const char *name, const char *value, int overwrite)
{
int res;
if ((res = check_null_empty_str (value)) == EFAULT)
{
set_errno (res);
return -1;
}
if ((res = check_null_empty_str (name)))
{
if (res == ENOENT)
return 0;
set_errno (res);
return -1;
}
myfault efault;
if (efault.faulted (EFAULT))
return -1;
if (!*name)
return 0;
if (*value == '=')
value++;
return _addenv (name, value, !!overwrite);